Rotary engine.



Pafcantad Seht. n, I900.

3 Sheets-Sheet L Nb. 657,559. Patented Sept. H, I900.

. J. E. MUAT$.--

ROTARY ENGINE.

. (Application filed. May 26, 190m (No Model.) 3 Sheots-Sheei 2.

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No. 657,559. 'Paten-ted' se i. n, 1900. J. E. moms. v 4

ROTARY ENGINE.

(Application filed May 26, 1900.)

(No Model.)

3 SheetaShaet 3.

4 gwbamto'o a f I UNITED @TATES PATENT ()FFICE.

'JAMES EDWARD MOATS, OF DALEVILLE, INDIANA.

ROTARY ENGINE.

srncrrxcn'rron forming part of Letters Patent No. 657,559, dated September 11, 1900.

Application filed May 26, 1900. Serial No. 18,180. (No model.) e

an engine of this character which will be ex-- tremely simple in construction, having but few parts, and therefore not liable to get out of order.

The further object of this invention is to construct such an engine where-by themaximum amount of power may be derived from the force used to run the engine.

With these and other objects in view the invention consists in the construction and 3:1. rangement of parts, as will be hereinaftermore fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a side elevation of my improved engine. Fig. 2 is an end view of the same.

Fig. 3 is a vertical-transverse section of the,

same. Fig. 4 is a vertical section on the line 00 a: of Fig. 1, and Fig. 5 is a horizontal section taken on the line of the drive-shaft. Fig. 6 is a detail View of, the piston removed from the cylinder.

In the drawings, 1 denotes the base; 2, the cylinder; 3 and 3, the cylinder-heads, bolted to the cylinder 2.

4 denotes the drive-shaft, mounted in bearings in the heads 3 3. a

5 denotes the piston, concentricallymount ed on the shaft 4 to rotate the same. 7 i The cylinder 2 is provided in its periphery with oppositely-arranged inlet-ports 6 and 6,

located one slightly above and the other be- .of the cylinder.

ing-boxesformedon saidheads. The inner' edges of the abutment-blocks are normally forced into close contact with each other within the cylinder by means of the springs '9, coiled around stems 10, projecting from the outer edges of said blocks, the free ends of which are slidably mounted in the upper ends of guide-brackets 12, bolted to said heads. The springs 9 are confined between the outer edges of the abutment-blocks and the ends of the guide-brackets 12. The abutmentblocks 8 and Sare located immediately above.

the inlet-port 6 and to one side of the drive- ,shaft. A similar arrangement of blocks 8' 8, mounted in packed bearing-boxes and having springs 9', coiled around stems l0, slidably mount-ed in guide-brackets l2, bolted on the heads 3 3', and located immediately below the inlet-ports 6', is provided for the.

opposite side of the engine.

The piston 5 consists of the hub 14, keyed or otherwise fastened on the drive-shaft 4 and provided'with the radial wedgeshaped spokes or arms 15 15 15", preferably three in number, being joined at their outer ends by the concentric ring or band 16. The band 16 of said piston is provided between the wedge-shaped arms or spokes with elongated inlet openings or ports 17 17 17, which are adapted upon rotation of the, piston to register alternately with the inlet-ports 6 and 6 The location of the abutment-blocks is within the ring or band of the piston, forming steam tight joints between said ring and the hub of said piston and also at their meeting edges,-which are held in close contact with each other by the tension of the coiled springs 9 and 9.

In order to prevent steam from getting behind the abutment-blocks when the elongated port of the piston is passing the inlet-port of the cylinder, I provide fiat leaf-springs 18 and 18, having one end rigidly connected with the head of the cylinder in a recess provided therein for the same, the free end being bent inwardly at a sharp'angle, forming a flat face which when sprung into the port of the piston comes into contact with the edge of abutment-blocks and forms a continuation of the abutment, so that no steam will be allowed to pass the said blocks.

In operation, the piston being in the position shown in Fig. 2 of the drawings, steam is now entering the port 6 of the'c'ylinder'and through the port 17 .of the piston. The expansion force of the same being exerted upon the broad edge of the wedge-shaped spoke of the piston and confined by the abutmentblocks 8 and 8 and spring 18'wi11 cause the said spoke and piston to move forward in the direction of .the arrow until said broad" edge" of the spoke 15 is brought into line with'the exhaust-port 7 of the cylinder. In the meantime the spoke 15* hasforcedapartrtheabut went-blocks 8 8 and passed the same and is receiving the force of steam from the" inlet Dort 6 and the piston-port 17 The spoke it will by this: time" be f'orcing' its'w'ay lie-- tween the blocks 8 8 and the steanr confined ,inthe space between thespoke's and 1 5"" will have been exhausted through the port 7'." It will thus be seen that theexpans-iveforee of the'live-stea'in isusc'd to-thegreatestdw greebe'fore beingexhaust'edl The ab'utmeut blocks-having Uheir'con tignous-meet-ingedges slightly bev'eled or rounded 01f will allow the sharp edges of the spokes to readily force" their. way between them and immediately" after passing the said blocks will-=be quickly forced together again before the piston port reaches the cylinder inlet-port; and at themoment the edgesof the elongated piston zport's reach the free endsof the flat'springs they will spring intosaidports just before they begin to register with the said=cylinder ports and into contact with: the'abn'tmentblocks, and by reason of' the angularly-he'nt- I ends'of said s-prings will form, aspr'eviously described, a steam-tight continuation oi the abutments. I V

Asuit'able governor and balancewlieel tnot showulare provided for inco'nnectioni with my engine. steamisaltomatelyadmiited to theinlet-portst and 6". 7

From the foregoing description, taken in connection with the accompanying drawings;-

the constructionaa-ndoperation O'f myengi'nB will be readilyunderstood, and a further de script-ion is not deemed necessary.

Havingthusdescribed my invention, what I c'la'i'rn, and desire t'o secure hy'Lett'ersPat ent, i's''- v p p 1-. In' a rotary engine, the combination 0fa cylinder having therein oppositely-arranged inlet' an'd exhaust ports, a concentric wheelshaped piston mounted to rotate therein, having Wedge-shaped spokes and a hub fixed on the drive-shaft of said engine, inlet-ports arranged in the periphery of saidpiston, and

automatically closing abutment blocks 10- cared-within the pathof said spokes, sub stantially as and for the purpose set forth;

2. In a rotary engine,- the combination of a cylinder having in the periphery thereof, op-

L positely-arranged inlet-ports, and in one head diametrically arranged exhaust-ports, a driveshaft; 2. Wheel-shaped piston concentrically :mounted on said shaft, a series of radial wedge-shaped spokes mounted within said w heeI -shaped piston, a series of ports 'arranged in; the peri hery of said piston and between said spokes, and automatically-opera-tedabutinentblocksarranged in pairs on opposite-sides'of "thecenterof said niston' and within the patnofsaid wedge shaped spokes,

substantially'asand for the purpose set-forth.

3; In a rotary engine, the combination of a base and' a cylindor mounted thereon, havin in? the periphery thereof op positely arranged inlet p'orjts, the d-iittn'etrica'lly'-arranged exhaust-ports; a-driveshaft, a Wheelshaped piston mounted on said shaftto'rotatethe s'ar'iiie','-a series of radial wedge-shaped s pokes close contact with each other, said blocks be rugadapted?totefore d r shaped Spokes allowing them $i s-tttntia'lly"as"andforfl e'P 19 set forth In testimony whereof I' have hereunto set my hand iii presen 'ce'of t wo subscribing wit-'- mosses.- i u JAMES EDWARD MOATS: Witnesses:

J STEWART, WM; FI'soU's; 

